With the CDC recommending all Americans wear face masks, scientists are in a race to understand how COVID-19 travels through the air.

As an expert on the fluid dynamics of disease, MIT associate professor Lydia Bourouiba discusses the implications of airborne transmission. See omnystudio.com/listener for privacy information.

Science Rules! with Bill Nye 

Bill Nye is on a mission to change the world — one voicemail at a time.